Luca Antignano of Creativemu says:

The long awaited Colecovision module, originally scheduled for use with CreatiVision (see picture), was then released for the Laser 2001 home computer (Salora Manager in Finland). It connects to the computer expansion port, and allows you use any ColecoVision cartridge. It features a Z80 CPU and two keypads, to use in combination with the Laser 2001/Salora Manager joysticks. Of course it has its own BIOS, which displays the "Expansion Module 1" text and boots the ColecoVision games.

thanks to Pelikonepeijoonit for this picture - please also check their wonderful website :-)